Controller-regulator.



C. P. BBBRSOLE.

' CONTROLLER REGULATOR. I IAPPLIUATION nun APB.15.1907.

PATENTED DEC. 17, 1907. V

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III IIIIIIIIIIIIHHNM Q'yrus Ebersole No. 874,173. 7 PATENTED DEC. 17, 1907.

' 0. P. EBBRSOLE.

CONTROLLER REGULATOR.

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APPLIUATION FILED APB- 15.1907.

UNITED STATES PATENT OFFICE.

CYRUS P. EBERSOLE, OF KEOKUK, IOWA, ASS I GNOR TO ELECTRIC SERVICE SUPPLIES COMPANY, OF CAMDEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

CONTROLLER-REGULATOR.

Specification of Letters Patent.

Patented Dec. 1'7 1907.

' Application filed April 15. 1907. Serial No. 368.255.

exact d'escription,reference being had to the accompanying drawing, forming a part this speclficatlon.

My invention relates to lmprovements in regulators for electric controllers, such as are used in connection with street car motors to compel the operator to turn on the current by a slow step-by-step movement of. the

operating handle of the controller, in order to obviate the injuries to the motor circuit that would result from a sudden turning on of the full current sent through the supply circuit.

The specific object of my invention is to provide improved means whereby the sta tionary base of the regulator and the movable hood'therefor are looked together so as to prevent separation of the parts, without in any way interfering with the movement of the hood.

Referring to the drawings, the several figures of which illustrate one embodimentof my invention, Figure 1 is a side elevation ofa controller re ulator provided with my new and improve means for locking the hood to the base; Fig. 2 is a top plan view showing part of the controller handle broken away to show more clearly the'opening through which the rollers are fed into the raceway, as hereinafter described. Fig. 3 is a cross section on the line 11 of Fig. 2 Fig. 4 is a top plan view of the base of the regulator with the hood removed, indicating the normal position of'the pawl. in full lines, and its deflected position in dotted lines ;"Fig; 5 is a bottom plan view of the hood showing the pawl in its normal position, as indicated in a full lines as well as'in its deflected position, as indicated in dotted lines; Fig. 6 is a cross sectional plan view on the line 2--2 of Fig. 3 showin tween t e base and the hood; and, Fig. 7 is a cross-sectional side view of my improved locking arrangement between the stationary base and the rotatable hood, the parts being in a position to show one way in which the insertion of the balls into the raceway may be effected.

. indicated in Fig. 2.

the ball-bearing connection be-Q Referring to the drawings wherein like reference numerals indicate corresponding parts throughout'the several views, the casing 1 of the controller is surmounted by the to p or cover 2, which is secured to the casing in any suitable manner. Attached to the top 2 is the controller regulator, comprising a base 3 secured to the top of the casing in any convenient way, as, for instance, by screws 'or bolts 4 passing mto the'top 2 through lugs 5 on the base. i The base has a central opening 6 through which passes the shaft 7 of thecontrollerl Rotatably mounted on the base is the hood 8 likewise provided with a central opening-9 which registers with the opening 6 in the base to permit the controller shaft to project beyond the hood so that the controller'handle 10 may be conveniently at-- tached to the projecting end 7 of the shaft as The hood is provided with a pair of upwardly extending lugs 1.1 between which the controller handle is arranged to fit when the hub of the handle is slipped over the top of the shaft, as clearly shownin Fig. 2. By this means the hood is operativel connected with the handle, and thereby a so with the controller shaft, so

that a rotation of the latter is accompanied by a corresponding rotation ofthe hood. To insure proper cooperation between the controller and the regulator, the projecting portion 7 of the controller-shaft is so shaped that the shaft and the hood must be in certain relative positions in order that the handle 10 may operatively engage the shaft of the controller and enter the space between the lugs 11.

Referring to Fig. 2, it will be observed that the upper end of the shaft is squared on three sides, the fourth side being rounded; the opening in the hub of the handle is of an outline to correspond to the shape of the.projecting portion 7 of the shaft, as just described. In consequence, to engage the handle with the hood, the latter must be brought to the starting position, in which Q scams part1 the cap plate 17, which may be secure to the we y suitable screws or rivets 18. The other arm of the awl extends downwardly through the opemng 12.

As shown in Fig. 4 the base of the controller-regulator is provided with a series of stops. or teeth 19 projecting inwardly from the peripheral flange 20. A series of outwardly extending cams 21 is provided on the inner circumferential flange 22 of the base.

' The downwardly 'projecting arm of the pawl rests by gravity normally in a position as shown in Fig. 3, and as indicated in Figs. 4 and 5. As will be seen frbm these three figures,-the lowerend of the pawl 13 lies normally in a position to en age the cams 21, so that, upon rotation 0% the hood in the directionindicated by the arrows in Fig.

4, the earns 21 will each deflect the pawl successively against each of the stops 19. One of these deflected ositions of the pawl is indicated in dotted nes 14 in Fig. 4. When,

as indicated in'Fig. 4, the pawl engages one of thestops 19 to arrest the movement of the hood 8, it is only necessary to slightly relax the pressure on the handle, and the pawl will by gravity disengage from the stop and' swlng inwardly against the next cam-surface,

to be by it urged outwardly again, upon forward movement of the. handle, into engage: ment with the next stop. And so the opera tion is continued until by this intermittent or step-b -step movement of the controller handle, t e o orator has turned on the full current at w 'ch'time the hood will have reached the limit of its forward travel, by reason of the pawl engaging the stop 23 over which it cannot ride. By virtue of the balland-socket mounting of the pawl it will be apparent that the backward. orcounter clock-Wise rotation of the hood takes place without interference or retardation, inasmuch as the pawl is freeto ride over the cams 21 and stops 19'.

The above described features of invention are not claimed herein per se, inasmuch as they form the subject-matter of and are claimed in certain other applications for United 'States Letters Patent .filed b me July 8, 190-5, and OetoberS, 1906, Seria Nos;

268,848 and 337,998, respectivel As stated'at the beginning of this specificationfthe essence of my invention resides in themeans for securing the hood .to the base 'of theregulator in sucha manner as not to interfere with the proper rotation of the hood.

It is plain to see that my'improved lockin mechanism between the base and the hood is capable of use in' connection with any approved form of controller-re ulator, one form of which I have 'describedand shown by way of illustration only,'withoutin any way-intending to limit the use'of my invention to such form of regulator. I will now proceed to describe in detail my im proved coking or securing means between t .e-stationary base 3 and the rotatable hood 8.

The inner flange 22 on the base, as most clearly seen in Figs. 3 and 7, is provided with a groove orchannel 24 which is approximately semi-circular in cross-section. The downwardly projecting, cylindrical flange 25 of the hood fits snugly within the opening 6 in v the base and is provided with a groove or channel 26, so con-- \structed and arranged-that when the hood and base are properly assembled the two grooves form a race-way in which is located a series of rollers 2'7. .'1hese rollers serve as locking means for securing the base and hood together and also perform the function of an antifriction bearing between the'parts. The rollers 27 are readily inserted into the raceway through an opening 28 formed in the hood, asshown in Figs. 2 'and 7. This opening registers permanently with a semicircular notch 29 cut-in the flange 25, and terminating in the roove 26, as clearly shown in Fig. 7. Asimilar notch 30 is cut in the upper art of the flange 22, so that by rotating the hood, the two notches ma be brought di rectly opposite each other, orming, in effect, a continuation of the opening 28, leading into the raceway, as illustrated in Fig. 7. The rollers may now be fed into the raceway, and the opening 28 is then closed by means of a plug, such as the screw 311 It will thus be seen that I have provided a'simple and efficient arrangement for securing the hood to the base, without le'astwise interfering with the proper and necessary rotation of the hood. I In case it should be desired to separate the hood-and the base, the regulator is removed from the top of the controller casing,'the screw 31 is withdrawn from the opening 28, the regulator is turned up-side-down, and the hood rotated until the notches 29 and 30 are made to register. The rollers will now drop out-one by one, whereupon the base and the hood'may be readily separated. Of course,

- in lieu of the spherical rollers one might use rollers of other configurations, such as cylindrical, in which event it would merely be necessary to alter corres ondinglythe sha e of the grooves forming t e raceway, and t e .shapeof the notches and opening through which the rollers areto be inserted into the raceway.

As above stated, and as set forth in the claims my invention is applicable to any preferred type-of controllerregulator, one specific type of which I have described and Shown in connection with my invention by way of illustration only and in order to secure a clear and complete understanding of the nature and purpose of myinvention.

Having thus described my invention, what rotatable hood, means for controlling the movement of the hood in one direction, and a series of rollers for locking the parts against separation without interfering with the rotation of the hood.

2. In a controller regulator, a base, a hood mounted to rotate thereon, means for regulating the movement of the hood in one direction, while permitting free rotation of the hood in the reverse direction, and means,

consisting of a series of rollers, for securing the base and hood against separation without interfering with the rotation of the hood.

3. In a controller-regulator, a base, ahood mounted-to rotate thereon, means for regulating the movement of the hood in one direction, while permitting free rotation of the hood in the reverse direction, and means for securing the hood and the base together without interferingwith the rotation of the hood, said means forming a roller bearing between the hood and the base.

4. In a controller-regulator, a base provided with cams and stops, a hood mounted to rotate on said base, a pawl carried by the hood to cooperate with said cams and sto s for compelling intermittent movement of t e hood in one direction, and coupling means for securing the hood and the base together, said couplin means forming a roller bearing betweenthe ood and the base.

5. A controller regulator comprising a base and a hood each having an annular groove which with the groove of the'other provides a race-way concentric with the axis of rotation of the hood, means for effecting a step by step movement of the hood in one direction without interfering with the uninterrupted movement thereof in the opposite direction, and a series of rollersin the race-way to lock the hood and base together without interfer- 7 ing with the rotation'of the hood.

6. In a controller-regulator, a base having a groove, a hood mounted to rotate on said base and provided with a groove, said grooves arranged to form a raceway, cams and stopson said base, a pawl carried by said hood to cooperate with said cams and stops for compellin intermittent movement of the hoodin one irection, while permitting free movement of the hood in the reverse direction, and rollers insaid raceway for rotatably securing the hood to the base.

7. In a controller regulatona base, a hood mounted to rotate thereon, means for regulating the movement of the hood in one direction whilepermitting free rotation thereof in the reverse direction, and means, consisting of a series ofrol1ers,for securing the hood and base together Without interfering with. the rotation of the hood, said rpllers being removed to permit of se aration of the parts only when the controler regulator is displaced from its normal operative position.

- In witness whereof, I have hereunto subscribed my name in the presence of two witnesses,

CYRUS I. EBERSOLE. Witnesses:

G. W. Cox, 0. A. LOEFFLER. 

